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dmaengine: qcom_bam_dma: Make driver work for BE 

This patch fixes the Qualcomm BAM dmaenging driver to work with big
endian kernels.

Signed-off-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
hifive-unleashed-5.1
Andy Gross 2016-02-29 17:15:19 -06:00 committed by Vinod Koul
parent 92e963f50f
commit 458f5884a1
1 changed files with 11 additions and 8 deletions
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19
drivers/dma/qcom_bam_dma.c
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@ -53,9 +53,9 @@
#include "virt-dma.h"
struct bam_desc_hw {
u32 addr; /* Buffer physical address */
u16 size; /* Buffer size in bytes */
u16 flags;
__le32 addr; /* Buffer physical address */
__le16 size; /* Buffer size in bytes */
__le16 flags;
};
#define DESC_FLAG_INT BIT(15)
@ -632,14 +632,15 @@ static struct dma_async_tx_descriptor *bam_prep_slave_sg(struct dma_chan *chan,
unsigned int curr_offset = 0;
do {
desc->addr = sg_dma_address(sg) + curr_offset;
desc->addr = cpu_to_le32(sg_dma_address(sg) +
curr_offset);
if (remainder > BAM_MAX_DATA_SIZE) {
desc->size = BAM_MAX_DATA_SIZE;
desc->size = cpu_to_le16(BAM_MAX_DATA_SIZE);
remainder -= BAM_MAX_DATA_SIZE;
curr_offset += BAM_MAX_DATA_SIZE;
} else {
desc->size = remainder;
desc->size = cpu_to_le16(remainder);
remainder = 0;
}
@ -915,9 +916,11 @@ static void bam_start_dma(struct bam_chan *bchan)
/* set any special flags on the last descriptor */
if (async_desc->num_desc == async_desc->xfer_len)
desc[async_desc->xfer_len - 1].flags = async_desc->flags;
desc[async_desc->xfer_len - 1].flags =
cpu_to_le16(async_desc->flags);
else
desc[async_desc->xfer_len - 1].flags |= DESC_FLAG_INT;
desc[async_desc->xfer_len - 1].flags |=
cpu_to_le16(DESC_FLAG_INT);
if (bchan->tail + async_desc->xfer_len > MAX_DESCRIPTORS) {
u32 partial = MAX_DESCRIPTORS - bchan->tail;